Home
Class 11
MATHS
If bara = 2bari - barj, barb = 4barj + b...

If `bara = 2bari - barj, barb = 4barj + bark, barc = 3bark` then `(2bara +barb+barc). (-barb+2barc) xx barc =`

A

48

B

28

C

`-28`

D

`-48`

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MULTIPLE PRODUCT OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|62 Videos

  • MULTIPLE PRODUCT OF VECTORS

    AAKASH SERIES|Exercise EXERCISE-I|40 Videos

  • MULTIPLE & SUBMULTIPLE ANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|68 Videos

  • PAIR OF STRAIGHT LINES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|15 Videos

Similar Questions

Explore conceptually related problems

If bara = bari - 2barj - 3bark, barb = 2bari + barj - bark , barc = bari + 3barj - 2bark then find bar(a) xx (barb xx barc) and |(barb xx barc) xx barc | .

If bara=2bari+barj-bark, barb= -bari+2barj-4bark, barc= bari+barj+bark then find (bara xx barb).(barb xx barc) .

Knowledge Check

  • If bara. barb = barb. barc = barc . bara = 0 then [bara barb barc] =

    A
    0
    B
    1
    C
    `-1`
    D
    `abs(bara)abs(barb)abs(barc)`

  • [bara barb barc]+[bara barc barb] =

    A
    `[bara barb barc]`
    B
    `2[bara barb barc]`
    C
    `3[bara barb barc]`
    D
    0

  • If bara=2bari +bark, barb=bari +barj+bark, barc=4bari-3barj+7bark then the vector barr satifying barr xx barb = barc xx barb and barr.bara= 0 is

    A
    `bari+8barj+2bark`
    B
    `bari-8barj+2bark`
    C
    `bari-8barj-2bark`
    D
    `-bari-8barj+2bark`

    • Similar Questions

    Explore conceptually related problems

    If bara = bari - 2barj - 3bark , barb= 2bari + barj - bark , barc = bari + 3barj - 2bark find bara xx (barb xx barc) .

    If bara=2bari+barj-bark,barb=-bari+2barj-4bark,barc=bari+barj+bark then find (baraxxbarb).(barbxxbarc)

    If bara= bari-2barj-3bark, barb=2bari+barj-bark, barc= bari+3barj-2bark then verify that bara xx (barb xx barc) = (bara.barc)barb- (bara.barb)barc .

    If bara= bari-2barj-3bark, barb= 2bari+barj-bark, barc= bari+3barj-2bark , find bara xx (barb xx barc) .

    If bara=2bari+3barj-bark,barb=-bari+2barj-4bark, barc=bari+barj+bark then abs((baraxxbarb)· (barbxxbarc)) =

    Home
    Profile